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Haulla "255" löytyi 136 tulosta.

SFS-EN 60255-121:en – Measuring relays and protection equipment – Part 121: Functional requirements for distance protection

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IEC 60255-121:2014 specifies minimum requirements for functional and performance evaluation of distance protection function typically used in, but not limited to, line applications for effectively earthed, three-phase power systems. This standard also defines how to document and publish performan ...
https://sales.sfs.fi/julkaisu.html.stx?id=373757

SFS-EN 60255-151:en – Measuring relays and protection equipment – Part 151: Functional requirements for over/under current protection

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IEC 60255-151:2009 specifies minimum requirements for over/under current relays. It includes a specification of the protection function, measurement characteristics and time delay characteristics. Defines the influencing factors that affect the accuracy under steady state conditions and performan ...
https://sales.sfs.fi/julkaisu.html.stx?id=342327

SFS-EN 60255-149:en – Measuring relays and protection equipment – Part 149: Functional requirements for thermal electrical relays

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IEC 60255-149:2013 specifies minimum requirements for thermal protection relays. This standard includes specification of the protection function, measurement characteristics and test methodologies. The object is to establish a common and reproducible reference for evaluating dependent time relays ...
https://sales.sfs.fi/julkaisu.html.stx?id=342223

SFS-EN 60255-127:en – Measuring relays and protection equipment – Part 127: Functional requirements for over/under voltage protection

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IEC 60255-127:2010 specifies minimum requirements for over/under voltage relays. The standard includes specification of the protection function, measurement characteristics and time delay characteristics. The standards writing body responsible for this document in Finland is Electrotechnical St ...
https://sales.sfs.fi/julkaisu.html.stx?id=342294

SFS-EN 14255-4:en – Measurement and assessment of personal exposures to incoherent optical radiation. Part 4: Terminology and quantities used in UV-, visible and IR-exposure measurements

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This standard specifies the terminology and the quantities that are used in UV-, VIS- and IR-exposure measurements according to parts 1, 2 and 3 of EN 14255. NOTE Parts 1 and 2 were published in 2005, while part 3 is under preparation. This standard can also be applied to the terminology and quan ...
https://sales.sfs.fi/julkaisu.html.stx?id=7659

SFS-EN 14255-3:en – Measurement and assessment of personal exposures to incoherent optical radiation. Part 3: UV-Radiation emitted by the sun

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This European Standard specifies procedures for the measurement or estimation and the assessment of personal exposures to ultraviolet radiation emitted by the sun. NOTE 1 According to CIE 17.4 UV-radiation is defined as an electromagnetic radiation with wavelength between 100 nm and 400 nm. Due t ...
https://sales.sfs.fi/julkaisu.html.stx?id=103100

SFS-EN 14255-2:en – Measurement and assessment of personal exposures to incoherent optical radiation. Part 2: Visible and infrared radiation emitted by artificial sources in the workplace

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This European Standard specifies procedures for the measurement and assessment of personal exposures to visible (VIS) and infrared (IR) radiation emitted by artificial sources, where adverse effects cannot be readily excluded. NOTE 1 Adverse effects will normally not occur in exposures caused by ...
https://sales.sfs.fi/julkaisu.html.stx?id=7658
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